<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref, watch, onMounted, computed } from 'vue'
import { userLogin, userRegister } from '@/api/user.js'
import { useUserStore, useRememberMeStore } from '@/stores/index.js'
import { useRouter } from 'vue-router'

const router = useRouter()

const isRegister = ref(false)

const rememberMeStore = useRememberMeStore()
const isRemember = computed(() => rememberMeStore.isRemember)
// 表单数据
const formModel = ref({
  username: '',
  password: ''
})

// 注册表单校验
const rules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    { min: 2, max: 30, message: '长度是 2-30 位字符', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    { min: 6, max: 20, message: '长度是 6-20 位字符', trigger: 'blur' }
  ],
  repassword: [
    { required: true, message: '请确认密码', trigger: 'blur' },
    {
      pattern: /^\S{6,15}$/,
      message: '必须是是 6-20 位非空字符',
      trigger: 'blur'
    },
    {
      validator: (rules, value, callbcak) => {
        if (value !== formModel.value.password) {
          callbcak(new Error('密码不一致'))
        } else {
          callbcak()
        }
      },
      trigger: 'blur'
    }
  ]
}

// 注册表单
const form = ref()
const register = async () => {
  // 表单验证
  await form.value.validate()
  // 注册
  await userRegister(formModel.value)
  isRegister.value = false
}

watch(isRegister, () => {
  formModel.value = {
    username: '',
    password: '',
    repassword: ''
  }
})

// 登录
const userStore = useUserStore()
const login = async () => {
  await form.value.validate()
  const res = await userLogin(formModel.value)
  userStore.setUser(res.data)
  await router.push('/')
}

const isMobileDevice = ref(false) // 检测设备是否为移动设备

onMounted(() => {
  // 检测视口宽度，判断设备是否为移动设备
  const setDeviceType = () => {
    isMobileDevice.value = window.innerWidth < 768 // 假设小于 768px 视为移动设备
  }
  window.addEventListener('resize', setDeviceType)
  setDeviceType() // 初始化设备类型
  if (isRemember.value) {
    formModel.value = {
      username: userStore.user.username,
      password: userStore.user.password
    }
  }
})
</script>

<template>
  <el-row class="login-page">
    <el-col v-show="!isMobileDevice" :span="12" class="bg"></el-col>
    <el-col
      :span="isMobileDevice ? 18 : 6"
      :offset="isMobileDevice ? 3 : 3"
      class="form"
    >
      <h1>Online Music</h1>
      <el-form
        :model="formModel"
        :rules="rules"
        ref="form"
        size="large"
        autocomplete="off"
        v-if="isRegister"
      >
        <el-form-item>
          <h2>
            <el-text class="mx-1" size="large" type="primary">注册</el-text>
          </h2>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            v-model="formModel.username"
            :prefix-icon="User"
            placeholder="请输入账号"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="formModel.password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <el-form-item prop="repassword">
          <el-input
            v-model="formModel.repassword"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入再次密码"
          ></el-input>
        </el-form-item>
        <el-form-item>
          <el-button
            @click="register"
            class="button"
            type="primary"
            auto-insert-space
          >
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <el-form
        :model="formModel"
        :rules="rules"
        ref="form"
        size="large"
        autocomplete="off"
        v-else
      >
        <el-form-item>
          <h2>
            <el-text class="mx-1" size="large" type="primary">登录</el-text>
          </h2>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            v-model="formModel.username"
            :prefix-icon="User"
            placeholder="请输入账号"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="formModel.password"
            name="password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            @keyup.enter="login"
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox
              v-model="isRemember"
              @click="rememberMeStore.setIsRemember(!isRemember)"
              >记住我</el-checkbox
            >
            <el-link type="primary" :underline="false">忘记密码？ </el-link>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button
            @click="login"
            class="button"
            type="primary"
            auto-insert-space
            >登录
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
:deep .el-form-item__content {
  justify-content: space-between;
}

.login-page {
  height: 100vh;
  background-color: #f5f5f5;

  .bg {
    background:
      url('@/assets/indexbackgoound.png') no-repeat 60% center / 1600px auto,
      url('@/assets/indexbackgoound.png') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>
